src/glu/sgi/libnurbs/interface/glrenderer.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 */
  34
  35 /*
  36  * glrenderer.h
  37  *
  38  * $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $
  39  * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glrenderer.h,v 1.1 2001/03/17 00:25:40 brianp Exp $
  40  */
  41
  42 #ifndef __gluglrenderer_h_
  43 #define __gluglrenderer_h_
  44
  45 #include <GL/gl.h>
  46 #include <GL/glu.h>
  47 #include "nurbstess.h"
  48 #include "glsurfeval.h"
  49 #include "glcurveval.h"
  50
  51 class GLUnurbs : public NurbsTessellator {
  52
  53 public:
  54                 GLUnurbs( void );
  55     void        loadGLMatrices( void );
  56     void        useGLMatrices( const GLfloat modelMatrix[16],
  57                                const GLfloat projMatrix[16],
  58                                const GLint viewport[4] );
  59     void                setSamplingMatrixIdentity( void );
  60
  61     void        errorHandler( int );
  62     void        bgnrender( void );
  63     void        endrender( void );
  64     void        setautoloadmode( INREAL value )
  65                     {
  66
  67                       if (value) autoloadmode = GL_TRUE;
  68                       else autoloadmode = GL_FALSE;
  69
  70                     }
  71     GLboolean   getautoloadmode( void ) { return autoloadmode; }
  72
  73     void        (GLAPIENTRY *errorCallback)( GLenum );
  74     void        postError( int which )
  75                     { if (errorCallback) (*errorCallback)( (GLenum)which ); }
  76
  77     void        putSurfCallBack(GLenum which, GLvoid (GLAPIENTRY *fn)(...))
  78       {
  79         curveEvaluator.putCallBack(which, fn);
  80         surfaceEvaluator.putCallBack(which, fn);
  81       }
  82
  83     int         get_vertices_call_back()
  84       {
  85         return surfaceEvaluator.get_vertices_call_back();
  86       }
  87
  88     void        put_vertices_call_back(int flag)
  89       {
  90         surfaceEvaluator.put_vertices_call_back(flag);
  91       }
  92
  93     int         get_callback_auto_normal()
  94       {
  95         return surfaceEvaluator.get_callback_auto_normal();
  96       }
  97
  98     void         put_callback_auto_normal(int flag)
  99       {
 100         surfaceEvaluator.put_callback_auto_normal(flag);
 101       }
 102
 103     void       setNurbsCallbackData(void* userData)
 104       {
 105        curveEvaluator.set_callback_userData(userData);
 106        surfaceEvaluator.set_callback_userData(userData);
 107      }
 108
 109
 110     //for LOD
 111     void LOD_eval_list(int level)
 112       {
 113         surfaceEvaluator.LOD_eval_list(level);
 114       }
 115
 116     //NEWCALLBACK
 117     int        is_callback()
 118       {
 119         return callbackFlag;
 120       }
 121     void       put_callbackFlag(int flag)
 122       {
 123         callbackFlag = flag;
 124         surfaceEvaluator.put_vertices_call_back(flag);
 125         curveEvaluator.put_vertices_call_back(flag);
 126       }
 127
 128 private:
 129     GLboolean                   autoloadmode;
 130     OpenGLSurfaceEvaluator      surfaceEvaluator;
 131     OpenGLCurveEvaluator        curveEvaluator;
 132
 133     void                loadSamplingMatrix( const GLfloat vmat[4][4],
 134                                 const GLint viewport[4] );
 135     void                loadCullingMatrix( GLfloat vmat[4][4] );
 136     static void         grabGLMatrix( GLfloat vmat[4][4] );
 137     static void         transform4d( GLfloat A[4], GLfloat B[4],
 138                                 GLfloat mat[4][4] );
 139     static void         multmatrix4d( GLfloat n[4][4], const GLfloat left[4][4],
 140                                 const GLfloat right[4][4] );
 141
 142    int                  callbackFlag;
 143 };
 144
 145 #endif /* __gluglrenderer_h_ */